Heat sink



FIG. 1 is a left side view of our new design for a heat sink with the opposite side view being a mirror image;

FIG. 2 is a top plan view of the heat sink shown in FIG. 1;

FIG. 3 is a rear elevation view of the heat sink shown in FIG. 1;

FIG. 4 is a bottom plan view of the heat sink shown in FIG. 1;

FIG. 5 is a front elevation view of the heat sink shown in FIG. 1;

FIG. 6 is a left side view of another embodiment of the heat sink shown in FIG. 1 with the opposite side view being a mirror image;

FIG. 7 is a top plan view of the heat sink shown in FIG. 6;

FIG. 8 is a rear elevation view of the heat sink shown in FIG. 6;

FIG. 9 is a bottom plan view of the heat sink shown in FIG. 6; and,

FIG. 10 is a front elevation view of the heat sink shown in FIG. 6.

The heat sink is shown broken away in FIGS. 2--5 and 8--10 to indicate indeterminate length. 

The ornamental design for a heat sink, as shown and described. 